Looking at the Gartner report posted above[0], it appears that Power BI has problems with data volumes, support, and (IMO the biggest issue) is it's cloud-only.

Looking at the Gartner report posted above[0], it appears that Power BI has problems with data volumes, support, and (IMO the biggest issue) is it's cloud-only. For some businesses, e.g. healthcare, the lack of an on-premise solution may be a showstopper. [0]: https://cdn2.hubspot.net/hubfs/2172371/Q1%202017%20Gartner.pdf?t=149626062 https://cdn2.hubspot.net/hubfs/2172371/Q1%202017%20Gartner.p...